Simon van der Meer was an electrical engineer whose development of stochastic cooling made dense antiproton beams available for collider experiments. The method reduces the spread of particle motion in phase space, allowing beams produced over many cycles to be accumulated.[ref]
A pickup senses an electrical signal from particles passing through a storage ring. After amplification and an appropriate delay, a downstream kicker applies a corrective force. The timing connects the measured deviation with the returning particles; the signal from each particle is mixed with contributions from others, so gain and noise determine the net cooling. This turns high-speed feedback electronics into a tool for controlling a particle distribution.[ref]
Stochastic Cooling and the Accumulation of Antiprotons by Simon van der Meer. Sections 2–3, figures 2–3
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Portrait of Simon van der Meer
. CERN. CC BY 4.0, via Wikimedia Commons. Source. Articles by others on the same topic
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Simon van der Meer was a Dutch physicist, best known for his pioneering work in particle physics. He played a significant role in the development of techniques for particle acceleration and storage, notably through his contributions to the creation of the first particle accelerator using a system known as the "resonant frequency method." This innovation was essential in the development of larger particle accelerators and led to several groundbreaking discoveries in the field of high-energy physics.